Preheat oven to 400°, Peel beets and carrots, Cut beets and carrots into 1-inch pieces, discarding beet stems, Toss with 1 Tbsp, olive oil, 1 tsp, kosher salt, and 1/4 tsp,______, Place in a single layer in center of a large piece of heavy-duty aluminum foil, Bring up foil sides over vegetables; double fold top and sides to seal, making a packet, Place on a baking sheet; bake 25 to 30 minutes or until tender, Cook couscous according to package directions; toss with 1 Tbsp, olive oil and balsamic vinegar, chopped fresh thyme, 1/2 tsp, kosher salt, and 1/4 tsp, black pepper, Top with roasted vegetables, diced peaches or mango, feta cheese, and fresh thyme sprigs,